Why research Sinetech first
Three installers dominate Gauteng searches. One has a stale website, declining reviews, and almost no social presence. Here's what that means for you — plus how we stack up.
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How we stack up
Based on publicly available information, customer reviews, and what Gauteng homeowners actually report. No cherry-picking.
Sinetech consistently appears in Gauteng solar searches — but look closer and you'll find a stale website with outdated content, review scores trending downward, and minimal active social presence. That's a signal, not a coincidence. Here's what that means for your install.
Verify their reviews yourself| Criteria | Sinetech | Solar Warehouse SA | Alumo Energy | VoltEdge |
|---|---|---|---|---|
| Pricing & Transparency | ||||
| Published pricing | ✗ No online pricing. Phone enquiries only. | ✗ No online prices — must call or visit branch | ◑ Some pricing on site, but limited system options shown | ✓ Transparent pricing on website; quote within 24h of enquiry |
| System size options clearly listed | ✗ Not available online — pushed to sales call | ✗ Only in-store or via sales rep | ◑ Basic options listed; no use-case guidance | ✓ Yes — 3.5kW to 10kW+ with descriptions and use-case guidance |
| No-obligation quote | ✗ Sales-driven — quote requires contact details | ◑ Quote given, but tied to in-store consultation | ✓ Free quote; no pressure sales approach | ✓ Free, no-pressure quote via WhatsApp or form |
| Clear on what's included (inverter, mounting, wiring) | ✗ Scope not disclosed until after deposit | ✗ Items often itemised only after deposit paid | ◑ Better than most, but still some hidden costs reported | ✓ Scope of work explained before any commitment |
| Installation & Ongoing Service | ||||
| Dedicated project manager | ✗ No PM assigned; multiple handoffs reported | ✗ Handed off after sale; no single point of contact | ◑ Varies — some clients get a PM, others don't | ✓ One person from site survey to switch-on |
| Post-installation support | ✗ Call centre only. Response times frequently exceed 5 days. | ✗ Long wait times and generic call centres | ◑ Better than average but no direct installer contact | ✓ Direct line to your installer — not a call centre queue |
| Maintenance plans available | ✗ Not offered as standalone service | ◑ Basic plans exist but rarely promoted | ◑ Some maintenance offerings, not clearly priced | ✓ Annual maintenance offered as standalone service |
| Product range | ◑ Limited; biased toward a few brands | ✓ Large range due to warehouse scale | ✓ Good range of panels and inverters | ✓ Sourcing from certified distributors; no inflated pricing |
| Trust & Credibility | ||||
| Online presence and reviews | ✗ Stale website, minimal social, declining review scores | ◑ Google presence but mixed review volume | ◑ Some online presence; limited public reviews | ✓ Direct referral feedback shared on request; growing track record |
| Local accountability | ◑ Gauteng office but hard to reach post-sale | ✓ Branch network across Gauteng | ✓ Gauteng-based with reasonable response times | ✓ Gauteng team, WhatsApp available during business hours |
| Response time (initial enquiry) | ✗ Slow. Online enquiries often go unanswered for days. | ◑ In-store: immediate. Online/WhatsApp: 1–3 days | ◑ 24–48 hours typical | ✓ WhatsApp or form: response within 2 hours |
| Licensed electrical contractor | ✓ Registered — verify COC on completion | ✓ Registered electrical contractor | ✓ Registered — verify COC on completion | ✓ Registered; COC provided on every install |
What you get with VoltEdge
We put these in writing because they're how we actually operate — not marketing language.
Your quote includes everything: panels, inverter, mounting, wiring, labour, and Certificates of Compliance. If something changes on site, we discuss it before proceeding — not after.
From site survey to switch-on, you deal with the same person. No call centre, no generic ticket queue. If something goes wrong, you call your installer — not a 0800 number.
Every installation gets a Certificate of Compliance (Electrical) before we hand over. This is your legal protection and your proof of a properly done install. We don't skip this.
If your system underperforms in the first 12 months due to our installation, we fix it at no charge before discussing any payment. Faulty mounting, wiring issues, inverter config — on us.
Text us. Photo of a warning light on your inverter? Send it. 9 times out of 10 we can diagnose and resolve remotely within the day — no truck roll needed.
Solar panels lose efficiency when dirty. We offer annual cleaning and inspection visits so your system keeps performing at full capacity year after year.
Our positioning
The solar industry in Gauteng has two extremes: big retailers who treat you like a transaction, and one-man-bands who vanish when something breaks. We built VoltEdge for homeowners who want accountability without the premium price tag.
Ready to switch on?
Not sure which system size is right for your home? That's what we're here for. Tell us your suburb and average bill — we'll scope it properly, no pressure.